Water glass | Glass varnish | Kiesol | Sodium metasilicate

Description

Water glass , also known as sodium silicate , Kiesol , Glass varnish , sodium metasilicate or soda water glass , is the versatile solution for construction and industrial applications. This high-quality silicate agent makes mortar and concrete more waterproof and stronger, helps against rising damp and impregnates surfaces permanently. Thanks to its high concentration, it reacts directly with free calcium in cement-based materials. This creates a dense CSH network that minimizes moisture absorption and extends the service life.

CAS/EC | 1344-09-8 / 215-687-4
Delivery | Fast shipping, directly from stock
Application | Mortar & concrete, moisture injection, surface impregnation

Why choose this Kiesol / Glass Varnish solution?

🧱 Waterproofing additive – fills capillary pores and reduces water absorption in mortar and concrete.
⏱️ Faster early strength – accelerates the first hydration phase, ideal for precast elements.
🛠️ Versatile in use – can be used as an injection fluid against rising damp and as a surface impregnation.

Applications

• Mortar & Concrete – Add 2–5% Kiesol or Glass Varnish to cement weight via the mixing water. This increases density and reduces formwork release time.
• Injection against damp – Dilute 1:1 with demineralised water. Drill Ø12 mm holes at 10–12 cm centre to centre; the solution forms an insoluble silicate gel in the wall.
• Surface impregnation – Apply a 5–10% solution wet-on-wet with a roller or spray. Allow to dry for at least 8 hours before further finishing.

📏 Yield: Depending on the application, 1 litre covers an average of 5–10 m² when impregnating.

Health and Safety

Danger

Hazard statements (H phrases)

• H318: Causes serious eye damage.
• H315: Causes skin irritation.

Precautionary measures (P-phrases)

• P264: Wash thoroughly after handling this product.
• P280: Wear protective gloves/protective clothing/eye protection/protective footwear.
• P302+P352: IF ON SKIN: Wash with plenty of water.
• P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. remove contact lenses, if possible; keep rinsing.
• P310: Immediately call a POISON CENTER/doctor.
• P321: Specific treatment (consult a physician with the Safety Data Sheet of this product).
• P332+P313: If skin irritation occurs: Get medical advice/attention.
• P362+P364: Remove contaminated clothing and wash before reuse.

FREQUENTLY ASKED QUESTIONS – FAQ

Is Glass Varnish the same as Kiesol or sodium silicate?
Yes, Glass Varnish, Kiesol and Sodium Silicate are different names for the same sodium metasilicate product, also called water glass or soda water glass.

How do I add Glass Varnish to mortar?
First dissolve the desired amount in the mixing water. Then add the dry components. Process the mix within ± 60 minutes.

Can this product make concrete water-repellent?
Addition to the concrete mix reduces capillary absorption. For existing floors, wet-on-wet impregnation or injection works best.

Is Glass Varnish Flammable?
No, this silicate is water-based and non-flammable.

Is it safe for reinforcement?
Yes, steel and stainless steel are not affected. Avoid direct contact with zinc or tin.

Why buy from us?

Our Kiesol / Glass Varnish solution is ideal for both professionals and DIY enthusiasts. Always available directly from stock, packaged according to the strictest safety standards. Large project? We are happy to think along with you!